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我收到一条错误信息,当我尝试运行我的拓扑结构:风暴InvalidTopologyException
java.lang.reflect.InvocationTargetException
...
Caused by: InvalidTopologyException(msg:Component: [write] subscribes from non-existent stream: [default] of component [write])
这里是我的拓扑声明:
TopologyBuilder builder = new TopologyBuilder();
builder.setSpout("spout", spout, 1);
builder.setBolt("write", new PrinterBolt(), 1).shuffleGrouping("write");
这是怎么回事?